Changelog
Changes in 0.9.1:
- Guard rails rebuilt as solid barriers and lowered to real Swiss W-beam height
- Granite parapets on the Susten fixed
- Sharp junction corners rounded (Innertkirchen, Gletsch, Realp, Hospental, Andermatt, Wassen)
- 3D grass on the meadows, not just along the road
- Steep cliffs now drawn and driven as rock instead of grass
- New: PostBus line 1 over the Grimsel

Description
Three Passes is the classic Swiss Alpine driving loop over the Grimsel, Furka and Susten passes: 122 km of real mountain road through a 1,074 km² slice of the Alps, built from Swiss national survey data rather than by hand.

The route:
Innertkirchen - Grimselpass (2164 m) - Gletsch - Furkapass (2429 m) - Realp - Andermatt - Schöllenen gorge - Wassen - Sustenpass (2224 m) - Gadmen - back to Innertkirchen.

Features:
- Over 40 hairpins, 33 tunnels, 12 avalanche galleries and 89 bridges, all positioned realistically
- Terrain from swisstopo's swissALTI3D elevation model with high detail on roads and verges
- Road follows real centreline and profile (swissTLM3D) with Swiss-standard markings, cracks, patches, and guard rails
- Buildings from swissBUILDINGS3D, including landmarks like Hotel Belvédère, Hotel Glacier du Rhône and the Grimsel Hospiz
- Approximately 790,000 trees and shrubs based on real canopy data, including rocks, meadow grass, and real-colored lakes
- Ambient sounds including rivers, waterfalls, altitude-based wind, and cowbells
- AI traffic with a full navgraph through tunnels and hairpins
- PostBus line 1 over the Grimsel with 15 real stops
- Four time trials: Furka climb, Grimsel climb, Susten climb and the full loop
- Six spawn points: Furkapass, Grimselpass, Sustenpass, Gletsch, Innertkirchen, Realp

Size and performance:
Download 485 MB, 1.44 GB unpacked. Built for BeamNG.drive 0.40. A mid-range or better GPU is recommended.

Known issues:
- Roadside grass may appear as a band from high altitudes
- Some rough spots (seams, sharp edges) around hairpins, tunnel portals, and bridge banks
- Some side roads may have small bumps where they join the loop
- Time trials are listed but not yet fully tested from start to finish
- Bus line number and paint are placeholders

Installation Instructions
Subscribe here, or download and put the zip, unopened, in your mods folder:
Windows: %LOCALAPPDATA%\BeamNG\BeamNG.drive\current\mods
Linux: ~/.local/share/BeamNG/BeamNG.drive/current/mods

Then choose "Three Passes" from the map list. The first load takes a few minutes while the game prepares textures; later loads are much faster.

Credits
- Terrain, aerial photo, roads, buildings, land cover and tree heights: Federal Office of Topography swisstopo (swissALTI3D, SWISSIMAGE, swissTLM3D, swissBUILDINGS3D, swissSURFACE3D), Open Government Data, © swisstopo
- Distant mountains: Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018
- Cowbells: "Vaches cloches 01.wav" by Hicham-chahidi (Wikimedia Commons), CC BY-SA 3.0
- Trees, rocks, grass and materials: BeamNG.drive's own assets
- Inspired by BeamNG.Earth by TecnaGamer
- antique-